用于三点式四象限变流器的新PWM方法  

New PWM scheme for 3 level four quadrant converter

作　　者：丁燕[1] 

机构地区：[1]北方交通大学

出　　处：《机车电传动》1997年第2期5-9,共5页Electric Drive for Locomotives

摘　　要：叙述了一种在三点式四象限变流器上实施的新ＰＷＭ方法，该方法是在文献［１］中提出的ＰＷＭ方法基础上改进的，加入了开关器件的死区时间补偿，并采用了最少开关模式。经Ｓａｂｅｒ仿真器仿真，证明新ＰＷＭ方法不仅对中性点直流电压控制连续，而且能较好的减少低次谐波。该方法采用实时计算，计算方法简单，易于微机实现。The paper describes a new PWM scheme for 3 level four quadrant converter,which is improved based on PWM scheme in reference,dead zone time compensation of switching device is added and minimal switching mode is used. Saber simu lation shows that new PWM scheme not only is continuous for neutral point DC voltage control but can also cut down lower order harmonics. The scheme adopts real time calculation which is simple and easily realized by microcomputer.

关 键 词：四象限控制 三点式 SABER仿真 PWM方法 变流器 

分 类 号：TM46[电气工程—电器]